CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Operating Revenues
Passenger, Mainline	$ 1,036	$ 1,019	$ 1,963	$ 1,920
Passenger, Regional	227	212	433	398
Total passenger revenue	1,263	1,231	2,396	2,318
Freight and mail	27	30	51	53
Other - net	204	176	394	335
Total Operating Revenues	1,494	1,437	2,841	2,706
Operating Expenses
Wages and benefits	332	305	668	611
Variable incentive pay	32	32	64	58
Aircraft fuel, including hedging gains and losses	201	261	368	496
Aircraft maintenance	65	52	133	115
Aircraft rent	26	26	55	52
Landing fees and other rentals	63	66	143	137
Contracted services	60	51	120	102
Selling expenses	55	54	104	107
Depreciation and amortization	92	79	180	155
Food and beverage service	31	28	62	53
Third-party regional carrier expense	24	17	47	33
Other	81	94	175	177
Special items - merger costs	14	0	14	0
Total Operating Expenses	1,076	1,065	2,133	2,096
Operating Income	418	372	708	610
Nonoperating Income (Expense)
Interest income	7	6	13	11
Interest expense	(9)	(11)	(22)	(22)
Interest capitalized	7	8	15	16
Other - net	(3)	1	(2)	1
Nonoperating Income (Expense) Total	2	4	4	6
Income before income tax	420	376	712	616
Income tax expense	160	142	268	233
Net Income	$ 260	$ 234	$ 444	$ 383
Basic Earnings Per Share (usd per share)	$ 2.11	$ 1.80	$ 3.58	$ 2.93
Diluted Earnings Per Share (usd per share)	$ 2.10	$ 1.79	$ 3.56	$ 2.91
Shares used for computation:
Basic shares (shares)	123,250,000	129,236,000	123,900,000	130,173,000
Diluted shares (shares)	123,988,000	130,255,000	124,715,000	131,271,000
Cash dividend declared per share (usd per share)	$ 0.275	$ 0.20	$ 0.55	$ 0.40